<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CSS的基本语法</title>
    <!-- 连接CSS文件 外部样式表-->
    <link rel="stylesheet" href="../css/style.css">
</head>
<body>
    <div class="box1">这是一个div</div>
    <div class="box1">这是一个div</div>
    <div class="box1">这是一个div</div>


    <p>aaaaaaaaaaaa<span class="street boss">bbbbbbbb</span>cccccccccc<span class="street boss">ddddddd</span></p>
</html>